221312654270 has 16 divisors (see below), whose sum is σ = 398449404720. Its totient is φ = 88505811264.

The previous prime is 221312654261. The next prime is 221312654287. The reversal of 221312654270 is 72456213122.

It is a self number, because there is not a number n which added to its sum of digits gives 221312654270.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2357975 + ... + 2450034.

It is an arithmetic number, because the mean of its divisors is an integer number (24903087795).

Almost surely, 2^221312654270 is an apocalyptic number.

221312654270 is a deficient number, since it is larger than the sum of its proper divisors (177136750450).

221312654270 is a wasteful number, since it uses less digits than its factorization.

221312654270 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4812619.

The product of its (nonzero) digits is 40320, while the sum is 35.

Adding to 221312654270 its reverse (72456213122), we get a palindrome (293768867392).

The spelling of 221312654270 in words is "two hundred twenty-one billion, three hundred twelve million, six hundred fifty-four thousand, two hundred seventy".